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3 years ago

HURRY I HAVE 2 MINUTES

Mathematics

1 answer:

Black_prince [1.1K]3 years ago

5 0

Answer:

Step-by-step explanation:

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How many solutions does the system have?

sertanlavr [38]

If a solution(s) exists y=y so we can say:

x^2-3x=-2x+2 add 2x to both sides

x^2-x=2 subtract 2 from both sides

x^2-x-2=0 factor

(x-2)(x+1)=0

So x=-1 and 2, using y=-2x+2 we find:

y(-1)=4 and y(2)=-2

So the two solutions occur at the points:

(-1,4) and (2,-2)

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4 years ago

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A bag contains 8 blue coins and 6 red coins. A coin is removed at random and replaced. This happens three times. What is the pro

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Answer:

Each time you draw, there is a 57.143% chance it will be blue, and a 42.857% chance it will be red.

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3 years ago

Get moneyy. Answer this.

Alexxandr [17]

It should be a 80 degrees.

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3 years ago

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Alexandra was out at a restaurant for dinner when the bill came. She wanted to leave a tip of 13%. What number should she multip

Karo-lina-s [1.5K]

Answer:

x = Total meal cost

y = Total cost-plus tip

113% * x = y

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3 years ago

The graph below shows the number of paintballs a machine launches, y, in x seconds:

IrinaVladis [17]

Answer:

The expression that can be used to calculate the rate per second at which the machine launches the balls is fraction 20 over 4.

Step-by-step explanation:

The x-axis label is Time in seconds, and the x-axis values are from 0 to 20 in increments of 4 for each grid line.

And the y-axis label is Number of Balls and the y-axis values from 0 to 100 in increments of 20 for each grid line.

If the ordered pairs (4,20) and (8,40) are on the graph, then the slope of the line will be represented by

$M = \frac{40 - 20}{8 - 4} = \frac{20}{4}$

Therefore, the expression that can be used to calculate the rate per second at which the machine launches the balls is fraction 20 over 4. (Answer)

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3 years ago

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